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Efficacy of etifoxine compared to lorazepam monotherapy in the treatment of patients with adjustment disorders with anxiety: a double-blind controlled study in general practice.

Author(s): Nguyen N, Fakra E, Pradel V, Jouve E, Alquier C, Le Guern ME, Micallef J, Blin O

Affiliation(s): CPCET et Pharmacologie Clinique, Institut des Neurosciences Cognitives de la Mediterranee, Faculte de Medecine, UMR CNRS Universite de la Mediterranee, Assistance Publique Hopitaux de Marseille-Hopital de la Timone, 13385 Marseille Cedex 5, France.

Publication date & source: 2006-04, Hum Psychopharmacol., 21(3):139-49.

Publication type: Clinical Trial; Comparative Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

Adjustment Disorders With Anxiety (ADWA) account for almost 10% of psychologically motivated consultations in primary care. The aim of this double-blind randomised parallel group study was to compare (non-inferiority test) the efficacies of etifoxine, a non-benzodiazepine anxiolytic drug, and lorazepam, a benzodiazepine, for ADWA outpatients followed by general practitioners. 191 outpatients (mean age: 43, female: 66%) were assigned to receive etifoxine (50 mg tid) or lorazepam (0.5-0.5-1 mg /day) for 28 days. Efficacy was evaluated on days 7 and 28 of the treatment. The main efficacy assessment criterion was the Hamilton Rating Scale for Anxiety score (HAM-A) on Day 28 adjusted to Day 0. The anxiolytic effect of etifoxine was found not inferior to that of lorazepam (HAM-A score decrease: 54.6% vs 52.3%, respectively, p=0.0006). The two drugs were equivalent on Day 28. However, more etifoxine recipients responded to the treatment (HAM-A score decreased by >or=50%, p=0.03). Clinical improvement (based on Clinical Global Impression scale CGI, Social Adjustment Scale Self-Report SAS-SR, and Sheehan scores) was observed in both treatment arms, but more etifoxine patients improved markedly (p=0.03) and had a marked therapeutic effect without side effects as assessed by CGI, p=0.04. Moreover, 1 week after stopping treatment, fewer patients taking etifoxine experienced a rebound of anxiety, compared to lorazepam (1 and 8, respectively, p=0.034). Copyright (c) 2006 John Wiley & Sons, Ltd.

Page last updated: 2007-02-12

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